Inquire carefully affirm that，the indicator light design of SIG9180E is different with usg9300。ACT display Amber indicator light steady on，means used primary main control board，on the contrary，means used secondary。But in usg9300，green indicator light steady on means primary main control board，on the contrary，means used secondary

Suggestions

There is different in high-level equipments，main control board indicator light has differences too. Meet problems of no attention before，not easy to consider is equipment fault，it is better to check handbook，ensure reason of correlation problems